Housing with gas-escape means for safety-lamp accumulators



July 19, 1955 F. K. WEBER 2,713,603

HOUSING WITH GAS-ESCAPE MEANS FOR SAFETY-LAMP ACCUMULATORS Filed Aug. 19, 1953 illa? HU USIING WITH GAS-ESCAPE MEANS SAFETY-LAMP ACCUMULATORS Friedrich Karl Weber, Dortmund-Bruminghausen, Germany, assignor to Concordia Elektrizitaets-Aktiengesellschaft, Dortmund, Germany FOR Claims priority,

It is usual with miners safety-lamps found on the market at present to separate the upper part from the lower part (the actual accumulator housing) for charging the accumulator, so that the gases evolved in charging can dissipate through the battery valves. Towards the end of charging, a vigorous formation of gas occurs in which small amounts of acid or lye are frequently entrained, which, however, can and must be removed immediately in order to avoid lye or acid burns.

The conditions are quite otherwise when it is necessary to keep the upper part and a lower part together during charging, which is fundamental in charging systems employed in foreign countries. It is not possible with the usual accumulator batteries and valve constructions employed at present to prevent some amounts of lye or acid leaving through the valves towards the end of charging.

In accordance with the invention, this liquid is received in the battery housing which is made liquid-tight. A gasescape opening located in the housing is supported by a peg, at such a distance from the cover, bottom and side walls, that lye or acid cannot flow out at any position of the housing. The housing is thus made liquid-tight for a certain amount of lye or acid on the one hand, and, on the other, allows the gases passing through the accumulator valves to dissipate into the atmosphere.

In the accompanying drawing, the invention is illustrated by way of example in an embodiment relating to a three-cell accumulator. In the drawing, Fig. 1 shows the housing from the outside with part of one wall broken away to show the interior; Fig. 2 is a view taken at right angles with respect to Fig. 1, partly in section on line 2-2 of said figure.

(i States Patent gas-escape opening from becoming soiled from the outside and to simplify its cleaning, a

It provided with 4 holes is inserted.

at I claim is:

gas from batteries contained in said housing, a peg-shaped means for gassaid support being arranged the gas-escape located laterally at such a distance from the bottom, side walls, and cover of 3. A housing for a safety-lamp accumulator according to claim 1,

plurality of is provided openings of said peg on the References Cited in the file of this patent UNITED STATES PATENTS 

